Abstract: Objective : To investigate the effects of various surgical treatments for pathological fractures caused by bone tumor. Mathods : Between June in 1995 and October in 2002, 68 patients with pathological fracture caused by bone tumors were treated and their clinical findings and treatment were analyzed through retrospective method, with 38 males and 30 females. Among the tumors causing pathological fracture, 27 cases with metastases, 20 cases with primary malignant tumors, 21 cases with benign tumors. Prim ary healing of fracture was almost achieved after a follow-up which was less than 7.2 years. Results : In 7 cases with metastases, resection of mass was followed by construction prosthesis. 8 patients with metastases were treated with a intram edullary nail. 4 cases had died of the disease.3 cases suffered from local relapse. 9 cases with osteosarcoma accepted limb sparing operation, 4 cases accepted amputation, all of which had no relapses with lung metastases in 4 patients. In 12 cases with giant cell tumor, 7 of which were treated with resection of mass followed by prosthesis construction, 5 of which were treated by curettage followed by cement filling, 3 cases suffered from local relapse. 6 patients with distant metastasis, 11 patients with local recurrence and dead of 8 patients were observed. Conclusion : For the pathological fracture caused by metastases % giant cell tumors and benign tumors,the local thorough resection of tumor and reconstruction is useful to reduce the relapse. If the osteosarcoma is sensitive to chemotherapy, the local thorough resection of tumor and reconstruction is also efficient to reduce the relapse and to prevent the lung metastasis even if the pathological fractures occur.